Re: [Intel-wired-lan] The ice driver may rarely return incorrect statistics counter values

[Przemek Kitszel <przemyslaw.kitszel@intel.com>]

On 7/2/25 10:01, Masakazu Asama wrote:
>  > The first step is to check if the linked patch fixes the issue at hand,
>  > could you please give it a try?
> 
> Sorry for the long delay.
> It took some time to complete the verification, as the environment I 
> used for testing is not something I can access freely. I apologize for 
> the inconvenience.
> 
> I have confirmed that applying the patch 1a0f25a52e08 to the Ubuntu 
> 22.04 kernel (5.15) resolves the issue.
> I’ve attached graphs showing the transmit/receive statistics before and 
> after applying the patch.
> The data before May 30th is from before the patch was applied, and the 
> data after May 30th is from after the patch.

thank you! it's great that this resolves the issue

> 
> However, since kernel 5.15 still uses struct ice_ring instead of struct 
> ice_tx_ring, I was not able to apply the patch as-is.
> I had to make two small modifications to replace struct ice_tx_ring with 
> struct ice_ring.

for me it was just one place to change (but there was also conflict in
need of manual resolution, so that makes it "two small modifications")

> 
> As shown above, the patch 1a0f25a52e08 appears to be effective on 5.15 
> as well, so I would greatly appreciate it if you could consider 
> backporting it.

I will send this as a patch to stable kernel 5.15, CC'ing you;
I think that Canonical will pick it up that way too